Inline gofer.regularFileFD.pwriteLocked
Inline gofer.regularFileFD.pwriteLocked

Go compiler barely inlines anything, so inline by hand
pwriteLocked since it's called from a single place.

PiperOrigin-RevId: 324937734

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor